Solve the System by Substitution, If Possible $\left\{ \begin{array} { l } - 6 x + 7 y = 50 \\12 x + 14 y = 124\end{array} \right.$

Multiple Choice

Solve the system by substitution, if possible. $\left\{ \begin{array} { l } - 6 x + 7 y = 50 \\12 x + 14 y = 124\end{array} \right.$

A) (9, -6)
B) (1, 8)
C) (-6, 9)
D) (-7, 10)
E) No solutions